Brennan admitted to detectives that she gave the girls weed brownies, police said in a news release. She resigned while under investigation and has been booked on two counts of contributing to the delinquency of a minor and two counts of marijuana distribution.

The school’s principal, Father Charles Latour, declined to comment on Brennan’s dismissal.

In a letter, Latour asked school parents to share news of the arrest with their children as they saw fit, “because of the delicate nature of this matter.”